Spicer Dana 30/44 Heavy Duty Axle U-Joint Combo - Includes Pair of Spicer 5-760X Axle U-Joints O.E.M Replacement Heavy Duty Forged Cross with Inside Snap Ring. Perma-lube Improved Seals For Long Service Life. Cup Size= 1.188in / Snap Ring To Snap Ring= 2.188in.